so this isnt really a issue to this specifically per se. but figured id put it here for people who need help with it.

currently if you try running this with the latest version of architectury forge. you will get the error, (if you have the older version of forge) that you need forge 43.2.0 or higher. and if you try running a higher version of forge. that is not 43.1.1. and optifine witch vivecraft can not run without. the game will crash..

what you need to do is download forge 43.1.1 (default in vivecraft installer) and architectury-6.3.56-forge. https://www.curseforge.com/minecraft/mc-mods/architectury-api/files/4104616 and the latest version of immersiveMC and vrapi

hope this helps :)

if this was allready known. sorry, didnt see it